Third Edition Hot Rolled and Structural Steel Products - CIM

26
Structural Steel Sections
HRSSP 3 rd Ed. December 2003
STANDARD SPECIFICATIONS
Structural Steel — Welded Sections — Standard: AS/NZS 3679.2:1996
Table 32 Chemical Composition — Welded Sections Base Plate
Cast or Product Analysis, Percent
Grade C Si Mn P S Cr Ni Cu Mo Al Ti Micro-alloying CE
(1) (2) (2) (2) (2) (3) Elements (4)
AS/NZS 3678 Max. Min. Max. Max. Max. Max. Min. Max. Max. Min. Max. Max. Max. Max. Max. Max.
300 & 300 L15 0.22 * 0.55 1.70 0.040 0.030 * 0.30 0.50 * 0.40 0.10 0.100 0.040 (see Note 5) 0.44
400 & 400L15 0.22 * 0.55 1.70 0.040 0.030 * 0.30 0.50 * 0.40 0.35 0.100 0.040 (see Note 6) 0.48
* = No specified limit.
Notes
1. The use of sulphide modification steelmaking techniques for listed grades is permitted.
2. Cr + Ni + Cu + Mo = 1.00% maximum apply.
3. Limits specified are for both acid soluble and total aluminium.
4. Carbon equivalent (CE) is calculated from the equation based on actual cast or product analysis:
CE = C + Mn + Cr + Mo + V + Ni + Cu
6 5 15
5. Niobium plus vanadium: 0.030% maximum.
6. Vanadium: 0.10% maximum. Niobium plus vanadium plus titanium: 0.15% maximum.
Table 33 Tensile Properties — Welded Sections Base Plate
Property Grade - AS/NZS 3678
300, 300L15 400, 400L15
Minimum Yield Strength — MPa for thickness of:
> 8 ≤ 12 310 400
> 12 ≤ 20 300 380
> 20 ≤ 50 280 360
Minimum Tensile Strength — MPa 430 480
Minimum Elongation % of Gauge Length of 5.65√S o 21 18
Note
1. S o is the cross-sectional area of the test piece before testing.
Table 34 Charpy V-Notch Impact Test Requirements — Welded Sections Base Plate
Grade Test Minimum Absorbed Energy, J
Temperature Size of Test Piece
AS/NZS 3678 10 mm x 10 mm 10 mm x 7.5 mm 10 mm x 5 mm
°C Average of Individual Average of Individual Average of Individual
3 Tests Test 3 Tests Test 3 Tests Test
300L15 -15 27 20 22 16 18 13
400L15 -15 27 20 22 16 18 13